Question

    Which of the following is also known as dry

    ice 
    A Solid CO₂ Correct Answer Incorrect Answer
    B Solid N₂O Correct Answer Incorrect Answer
    C Solid CO Correct Answer Incorrect Answer
    D Solid NO Correct Answer Incorrect Answer

    Solution

    Solid CO₂ is also known as dry ice. It does not melt into a liquid when heated; instead, it changes directly into a gas (This process is known as sublimation). Dry ice is often used for the following purposes. Hospitals & Clinics Food Processing & Distribution Industrial Cleaning and Technical Processes Theatrical and Special Effects Hence, option A is correct.

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